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Finding the Fourth Proportional to 90,055, 135,040.06 and 52,625.85

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Solution

The fourth proportional to 90,055, 135,040.06 and 52,625.85 is: 78,913.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,055 : 135,040.06 = 52,625.85 : x
  2. Step 2: Convert to fraction form
    90,055/135,040.06 = 52,625.85/x
  3. Step 3: Cross multiply
    90,055x = 135,040.06 × 52,625.85
  4. Step 4: Simplify right side
    90,055x = 7,106,597,941.55
  5. Step 5: Solve for x
    x = 7,106,597,941.55/90,055
  6. Step 6: Final answer
    x = 78,913.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.